Tobacco – Tobacco treatment – Extraction of component – other than moisture – by contact...
Reexamination Certificate
2008-03-04
2008-03-04
Lopez, Carlos (Department: 1731)
Tobacco
Tobacco treatment
Extraction of component, other than moisture, by contact...
C131S298000, C131S309000, C131S310000
Reexamination Certificate
active
10920468
ABSTRACT:
A process is disclosed for removing proteins and other undesirable biomolecules from tobacco extract or slurry via foam fractionation, thereby concentrating the tobacco extract or slurry. The tobacco extract or slurry is treated and modified prior to being subjected to the foam fractionation to enhance the extent and efficiency of protein removal. After foam fractionation, the concentrated extract, sans proteins and other Hoffman analyte precursors, is applied to a tobacco sheet material, and the collected foam can be recirculated through foam fractionation for enhanced concentration.
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Lopez Carlos
Middleton & Reutlinger
R.J. Reynolds Tobacco Company
Sherman Charles I.
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